The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, one of the invention
Purpose is the load capacity determination methods for proposing a kind of dryer, and the determination methods are influenceed small by environment temperature, humidity,
It is more accurate.
Another object of the present invention is to propose a kind of dryer.
In order to solve the above problems, one aspect of the present invention proposes a kind of load capacity determination methods of dryer, the determination methods bag
Include following steps:After the drying procedure for detecting dryer starts, the dryer is controlled to heat first with the first power
Preset Time;The dryer is controlled to heat the second Preset Time with the second power, wherein, second power is less than described
First power, second Preset Time is less than first Preset Time;The temperature of load in the dryer is detected, and
The thermograde of the load is calculated every the 3rd Preset Time when the dryer is heated with second power, institute is obtained
State the thermograde sequence and total temperature change value being supported in second Preset Time;According to the thermograde sequence
Row and total temperature change value judge the load capacity grade of the load.
The load capacity determination methods of dryer of the invention, by switching heating mode, when dryer is heated with the second power,
The thermograde sequence in the second Preset Time is obtained every the 3rd Preset Time computational load thermograde, and is supported on
Total temperature change value in second Preset Time, load capacity grade is judged according to thermograde sequence and total temperature change value,
The influence that environment temperature, humidity are judged load capacity can largely be reduced, more accurately.
Wherein, the load capacity grade of the load is judged according to the thermograde sequence and total temperature change value, specifically
Including:If the thermograde is changed into just, judging the load for the first estate is loaded from negative;Or, if described
Thermograde then judges the load for the second grade is loaded by bearing vanishing, wherein, the weight of the second grade load
More than the weight that described the first estate is loaded.
In some embodiments of the invention, the above method also includes:If the thermograde is negative and described total temperature
Changing value then judges the load for the tertiary gradient is loaded more than or equal to first temperature difference and less than second temperature difference, wherein, institute
State the weight of the weight more than second grade load of tertiary gradient load;Or,
If the thermograde is negative and described total temperature change value more than or equal to second temperature difference and less than the 3rd temperature
Difference, then judge the load for the fourth estate is loaded, wherein, the weight of the fourth estate load is more than the tertiary gradient
The weight of load;Or
If the thermograde is negative and described total temperature change value is more than the 3rd temperature difference, judge that the load is
5th grade is loaded, wherein, the weight of the weight more than fourth estate load of the 5th grade load.
In addition, in some embodiments of the invention, above-mentioned determination methods also include:In the dryer with first work(
When rate is heated, the electromotive force phase angle of the motor according to the dryer tentatively judges load capacity, or, according to the load
Humidity tentatively judge load capacity.
In addition, in some embodiments of the invention, the above method also includes:Load capacity grade according to the load is to institute
The drying time for stating dryer is adjusted, such that it is able to more correctly determine clothes drying time, energy-conservation, protection load
It is without damage.
In order to solve the above problems, another aspect of the present invention also proposes a kind of dryer, and the dryer includes:Body, drying
Cylinder and baker;Temperature sensor, the temperature for detecting load in the drying cylinder;Controller, the controller is in inspection
Measure after drying procedure startup, control the baker to heat the first Preset Time with the first power, and control the drying
Device heats the second Preset Time with the second power, when the baker is heated with second power every the 3rd Preset Time
Calculate the thermograde of the load, obtain described in the thermograde sequence that is supported in second Preset Time and total
Temperature change value, and the load capacity grade of the load is judged according to the thermograde sequence and total temperature change value,
Wherein, first power is more than second power, and first Preset Time is more than second Preset Time.
Dryer of the invention, by switching heating mode, when baker is heated with the second power, controller every
3rd Preset Time computational load thermograde obtains the thermograde sequence in the second Preset Time, and is supported on second
Total temperature change value in Preset Time, load capacity grade is judged according to thermograde sequence and total temperature change value, can
Largely to reduce the influence that environment temperature, humidity are judged load capacity, more accurately.
Specifically, the controller is additionally operable to carry out following judgement:
It is changed into timing from negative in the thermograde, judges the load for the first estate is loaded;Or
When the thermograde is by negative vanishing, the load is judged for the second grade is loaded, wherein, second grade
Weight of the weight of load more than the load of described the first estate;Or
The controller is additionally operable to carry out following judgement:The thermograde be negative and described total temperature change value be more than or
During equal to first temperature difference and less than second temperature difference, judge that the load is tertiary gradient load, wherein, the tertiary gradient is born
Weight of the weight of load more than second grade load;Or
It is that negative and described total temperature change value is more than or equal to second temperature difference and less than the 3rd temperature difference in the thermograde
When, the load is judged for the fourth estate is loaded, wherein, the weight of the fourth estate load is negative more than the tertiary gradient
The weight of load;Or
When the thermograde is that negative and described total temperature change value is more than three temperature difference, judge described load as the
Five grades are loaded, wherein, the weight of the weight more than fourth estate load of the 5th grade load.
In addition, the dryer also includes:Humidity sensor, the humidity sensor is used to detect negative in the drying cylinder
The humidity of load, the controller is additionally operable to carry out following judgement:
When the baker is heated with first power, the electromotive force phase angle of the motor according to the dryer is tentatively sentenced
Disconnected load capacity;Or, the humidity according to the load tentatively judges load capacity.
The controller is additionally operable to, and the load capacity grade according to the load is adjusted to drying time.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein identical from start to finish
Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Dryer and its load capacity determination methods for proposing according to embodiments of the present invention are described with reference to the accompanying drawings.
Load capacity determination methods first to the dryer of the embodiment of the present invention are illustrated, and Fig. 1 is of the invention
The flow chart of the load capacity determination methods of the dryer of one embodiment, as shown in figure 1, the determination methods are including following
Step:
S1, after the drying procedure for detecting dryer starts, control dryer heats the first Preset Time with the first power.
S2, control dryer heats the second Preset Time with the second power.
Wherein, the second power is less than the first power, and the second Preset Time is less than the first Preset Time.Specifically, the present invention is real
The controlled heating trajectory of the dryer of example is applied, is divided into two stages, usually, the first Preset Time is far longer than second and presets
Time, for example, the first Preset Time is 2.5-3 times of the second Preset Time, and the second power is less than the first power, for example,
Second power is the half size of the first power.
S3, the temperature of load in detection dryer, and calculated every the 3rd Preset Time when dryer is heated with the second power
The thermograde of load, acquisition is supported on thermograde sequence and total temperature change value in the second Preset Time.
Specifically, the temperature of the hot blast temperature as load that work of such as detection drying cylinder outlet, in control dryer with second
When power is heated, every the thermograde of the 3rd Preset Time computational load, a series of temperature is obtained in the second Preset Time
Degree gradient is referred to as thermograde sequence, and the thermograde sequence represents the variation tendency of load temperature.
Meanwhile, the initial temperature and the second Preset Time of the work hot blast of drying cylinder outlet when the second Preset Time of record starts
At the end of end temp, obtain total temperature change value of load in the second Preset Time, i.e. end temp and initial temperature
Difference.
S4, the load capacity grade of load is judged according to thermograde sequence and total temperature change value.
I.e. the load capacity determination methods of the dryer of the embodiment of the present invention, specify when being heated with the second power according to dryer
The second Preset Time in load temperature change, thermograde sequence is calculated, according to thermograde value changes and total
Temperature change value, judges load capacity, can largely reduce the shadow that environment temperature, humidity are judged load capacity
Ring, more accurately.
Fig. 2 is the schematic diagram of the computer heating control process of the dryer of a specific embodiment of the invention, is heated in Fig. 2
Pattern 1 is heated to time t1 with the first power, equivalent to the warm to clothing, i.e. clothing by cool gradually heating process,
The temperature of clothing is gradually increasing, and heating mode 2 is heated to time t2 with the second power, when the t2-t1 times being second default
Interior, because load capacity is different, the speed of moisture evaporation is different, the temperature change of load by difference, wherein, temperature change
Slope of a curve is equivalent to thermograde.
Referring to shown in Fig. 2, to judging that the load capacity of load etc. is grading according to thermograde sequence and total temperature change value
Row is described in detail.
It is that between t2-t1, if thermograde is changed into just from negative, i.e., the slope of temperature curve becomes in the second Preset Time
Change and be changed into just from negative, then judge that load is loaded for the first estate, for example, load is frivolous load for small load, due to frivolous
Load is easier drying, and within the t2-t1 times, moisture content is evaporated quickly, and the temperature for then loading gradually rises, i.e., right
The slope of the temperature curve P1 of small load in Fig. 2 is answered to gradually become just, i.e., thermograde sequence experience is changed into just from negative.
If thermograde judges that load is loaded for the second grade by bearing vanishing, wherein, the weight of the second grade load
More than the weight that the first estate is loaded, for example, the load of the second grade is medium and small load.For the temperature change phase of medium and small load
Slow compared with for frivolous load, within the t2-t1 times, the evaporation of moisture content is that load tends to after load temperature is reduced
Dry, i.e., load temperature gradually tends towards stability, i.e. the slope of the temperature curve P2 of the medium and small load in corresponding diagram 2 goes to zero,
That is thermograde sequence experience is by bearing vanishing.
If thermograde is negative and total temperature change value is more than or equal to first temperature difference and less than second temperature difference, judge negative
It is tertiary gradient load to carry, wherein, the weight of the weight more than the load of the second grade of tertiary gradient load, for example, the third
Level load is middle load.For middle load, in corresponding diagram 2 shown in temperature curve P3, for medium and small load, dry
During temperature change it is slower, within the t2-t1 times, middle load will not be completely dried, middle load in the drying process,
The temperature for then loading slowly is reduced, i.e., thermograde sequence is negative, and within the t1-t2 times, the total temperature change of middle load
Value is between first temperature difference and second temperature difference, wherein, first temperature difference and second temperature difference can be set according to actual conditions.
If thermograde is negative and total temperature change value is more than or equal to second temperature difference and less than the 3rd temperature difference, judge negative
Carry as the fourth estate is loaded, wherein, the weight of the weight more than tertiary gradient load of fourth estate load, for example, the fourth class
Level load is heavy load.For heavy load, in corresponding diagram 2 shown in temperature curve P4, within the t2-t1 times, heavy load is not
Can be completely dried, heavy load be in drying process in, then the temperature for loading slowly is reduced, i.e., thermograde sequence be it is negative,
And within the t1-t2 times, due to there are more moisture content in heavy load, then the temperature drop rate of heavy load is born compared in
Carry fast, i.e., the total temperature change value of heavy load is more than total temperature change value of middle load, the total temperature change value of heavy load
Between second temperature difference and the 3rd temperature difference, wherein, second temperature difference and the 3rd temperature difference can be set according to actual conditions.
If thermograde is negative and total temperature change value is more than the 3rd temperature difference, judge that load is that the 5th grade is loaded, its
In, the weight of the weight more than fourth estate load of the 5th grade load, for example, load is loaded for super large.It is negative for super large
Carry, in corresponding diagram 2 shown in temperature curve P5, within the t2-t1 times, super large load will not be completely dried, super large load
In drying process, then the temperature of super large load is slowly reduced, i.e., thermograde sequence is negative, and within the t1-t2 times,
Due to there are more moisture content in super large load, then the temperature drop rate of super large load is fast compared to heavy load, and super large is born
Total temperature change value of total temperature change value more than heavy load is carried, super large loads total temperature change value and is more than the 3rd temperature difference.
Based on described above, Fig. 3 is the stream of the load capacity determination methods of the dryer of a specific embodiment of the invention
Cheng Tu, reference picture 2, as shown in figure 3, the method is specifically included:
S100, dryer 1 heats the t1 times in the heating.
S110, dryer 2 heats the △ T=t2-t1 times in the heating.
S120, calculates the thermograde sequence and total temperature change value in △ T times.
S130, judges whether the thermograde Grand-Temp in △ T times is become just by negative, if it is, into step S140,
Otherwise enter step S150.
S140, judges that load is small load.
S150, judges whether the thermograde Grand-Temp in △ T times becomes zero by negative, if it is, into step S160,
Otherwise enter step S170.
S160, judges that load is medium and small load.
S170, judges that the thermograde Grand-Temp in △ T times is negative and total temperature change value T more than or equal to the
One temperature difference A and less than the second temperature difference B, if it is, into step S180, otherwise into step S190.
S180, it is middle load to load.
S190, judges that the thermograde Grand-Temp in △ T times is negative and total temperature change value T more than or equal to the
Two temperature difference B and less than the 3rd temperature difference C, if it is, into step S200, otherwise into step S210.
S200, it is heavy load to load.
S210, loads as super large is loaded.
Put it briefly, the load capacity determination methods of the embodiment of the present invention, regulation time point be converted in the heating 2 plus
Heat, the change of load temperature in the record lower stipulated time of heating mode 2, calculates thermograde sequence, using thermograde value
Change and total temperature variation, judge load capacity grade, can avoid the influence of environment temperature, humidity to judged result.
Further, the load capacity determination methods of above-mentioned dryer can individually be implemented, can also be with existing motor powered gesture
Phase angle is judged the method for load or is judged that the method for load capacity is combined by way of humidity sensor, used as second
Secondary more accurate load capacity judges.In one embodiment of the invention, when dryer is heated with the first power, according to dry
The electromotive force phase angle of the motor of clothing machine tentatively judges load capacity, or, the humidity according to load tentatively judges load capacity, enters
And according to said process to tentatively judging that load capacity further carries out fine stepping.Specifically, for example, being opened in drying program
In stage beginning, using motor powered gesture phase horn cupping or the method for humidity sensor, preliminary identification distinguishes large, medium and small three kinds
Load capacity, and then, with reference to aforementioned controlled heating mode, thermograde sequential value is calculated, load characteristic can be further discriminated between,
Determine whether the thick and heavy load for being difficult to dry, such as cowboy, bath towel, or be the load of common quality.I.e. preliminary judgement
Finer classification is carried out to big or middle load, small load, medium and small load, middle load, heavy load, super large load is distinguished.
The method is used in dryer efficiency test program, final moisture content can be loaded with precise control, reach the mesh of save energy
's.
In another embodiment of the present invention, when the load capacity grade that can be obtained according to the above method is to the drying of dryer
Between be adjusted.For example, above-mentioned load capacity determination methods can judge that load drying degree algorithm is combined with humidity sensor,
In drying final stage, when humidity sensor signal can not correctly judge laundry load water content, can more correctly determine
The clothes drying time, reach energy-conservation, the purpose of protection load.For example, when dryer is dried, when drying to load
When moisture content is less than 18%, humidity sensor signal can not correct reflected load moisture content, the drying of final stage, really
Timing drying course.The time of timing drying, relevant with load capacity, load quality, the controller of dryer is calculated from drying
Start to drying the drying run time to loading during water content 18%, rule of thumb data form the time of last baking stage.
Wherein, empirical data is relevant with load capacity, load characteristic, is obtained by experiment, in writing controller, obtains last baking
The dry time.According to the load capacity level adjustment drying time for more refining, during such that it is able to more accurately determining clothes drying
Between, energy-conservation and avoid laundry damage.
Explanation based on the above method, below the dryer to another aspect of the present invention embodiment illustrate.
Fig. 4 is the functional block diagram of dryer according to an embodiment of the invention, as shown in figure 4, the dryer 100
Including body 10, drying cylinder 20, baker 30, temperature sensor 40 and controller 50.
Wherein, temperature sensor 40 is used to detect the temperature of load in drying cylinder 20.Controller 50 is detecting drying procedure
After startup, control baker 30 heats the first Preset Time with the first power, and controls baker 30 to add with the second power
Hot second Preset Time, when baker 30 is heated with the second power every the thermograde of the 3rd Preset Time computational load,
Acquisition is supported on thermograde sequence and total temperature change value in the second Preset Time, and according to thermograde sequence and
Total temperature change value judges the load capacity grade of load.
Specifically, the controlled heating trajectory of the dryer 100 of the embodiment of the present invention, is divided into two stages, usually, first
Preset Time is far longer than the second Preset Time, for example, the first Preset Time is 2.5-3 times of the second Preset Time, and the
Two power are less than the first power, for example, the second power is the half size of the first power.
For example, temperature of the work hot blast temperature of the outlet of detection drying cylinder 20 as load, in control baker 30 with second
When power is heated, controller 50 obtains one every the thermograde of the 3rd Preset Time computational load in the second Preset Time
The thermograde of series is referred to as thermograde sequence, and the thermograde sequence represents the variation tendency of load temperature.Meanwhile, note
At the end of recording the initial temperature and the second Preset Time of the work hot blast that drying cylinder 20 is exported when the second Preset Time starts
End temp, obtains the difference of total temperature change value of load in the second Preset Time, i.e. end temp and initial temperature.
And then the load capacity grade that controller judges to be loaded in drying cylinder 20 according to acquisition thermograde sequence and total temperature change value.
As can be seen that the dryer 100 of the embodiment of the present invention, by switching heating mode, in baker 30 with the second power
During heating, controller 50 obtains the thermograde in the second Preset Time every the 3rd Preset Time computational load thermograde
Sequence, and the total temperature change value in the second Preset Time is supported on, according to thermograde sequence and total temperature change
Value judges load capacity grade, can largely reduce the influence that environment temperature, humidity are judged load capacity, more smart
Really.
Specifically, controller 50 is used to carry out following judgement:It is changed into from negative in the thermograde being supported in the second Preset Time
Timing, judges that load is loaded for the first estate;Or, when thermograde is by negative vanishing, judge that load is the second grade
Load, wherein, the weight of the weight more than the first estate load of the second grade load.
Controller 50 is additionally operable to carry out following judgement:It is negative and total temperature in the thermograde being supported in the second Preset Time
Changing value judges that load is tertiary gradient load more than or equal to first temperature difference and during less than second temperature difference, wherein, the third
The weight of the weight more than the load of the second grade of level load;Or, thermograde be negative and total temperature change value be more than or
During equal to second temperature difference and less than three temperature difference, judge that load is fourth estate load, wherein, the weight of fourth estate load
More than the weight that the tertiary gradient is loaded;Or, when thermograde is that negative and total temperature change value is more than three temperature difference, sentence
Disconnected load is loaded for the 5th grade, wherein, the weight of the weight more than fourth estate load of the 5th grade load.
As shown in figure 5, dryer 100 also includes humidity sensor 60, humidity sensor 60 is used to detect in drying cylinder 20
Load humidity, controller 50 when controlling baker 30 to be heated with the first power, motor according to dryer 100
Electromotive force phase angle tentatively judges load capacity;Or, the humidity according to load tentatively judges load capacity, and then by above-mentioned mistake
Journey further refines stepping to the preliminary load capacity for judging, load capacity judges more accurate.
In one embodiment of the invention, controller 50 is additionally operable to adjust drying time according to the load capacity grade of load
It is whole.For example, the above-mentioned load capacity determination methods of controller 50 can judge load drying degree algorithm knot with humidity sensor 60
Close, in drying final stage, when the detection signal of humidity sensor 60 can not correctly judge laundry load water content, Ke Yigeng
Correctly determine in the clothes drying time, reach energy-conservation, the purpose of protection load.
It should be noted that in the explanation of this specification, in flow chart or herein any process described otherwise above or
Method description be construed as, expression include it is one or more for realizing specific logical function or process the step of can
The module of the code of execute instruction, fragment or part, and the scope of the preferred embodiment of the present invention includes other realization,
Can not wherein press order that is shown or discussing, including function involved by basis by it is basic and meanwhile in the way of or by opposite
Sequentially, perform function is carried out, this should be understood by embodiments of the invention person of ordinary skill in the field.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered for reality
The order list of the executable instruction of existing logic function, in may be embodied in any computer-readable medium, for instruction
Execution system, device or equipment (such as computer based system, including the system of processor or other can be performed from instruction
The system of system, device or equipment instruction fetch and execute instruction) use, or with reference to these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicating, propagating
Or transmission procedure is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Device.The more specifically example (non-exhaustive list) of computer-readable medium includes following:With one or more cloth
The electrical connection section (electronic installation) of line, portable computer diskette box (magnetic device), random access memory (RAM) is read-only
Memory (ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and it is portable
Compact disc read-only memory (CDROM).In addition, computer-readable medium can even is that the paper that can thereon print described program
Or other suitable media, because optical scanner for example can be carried out by paper or other media, then enter edlin, solution
Translate or if necessary processed with other suitable methods and electronically obtain described program, be then stored in computer
In memory.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.In above-mentioned reality
In applying mode, software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage or
Firmware is realized.If for example, realized with hardware, and in another embodiment, can be with well known in the art
Any one of row technology or their combination are realized:With the logic gates for realizing logic function to data-signal
Discrete logic, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA) is existing
Field programmable gate array (FPGA) etc..
Those skilled in the art be appreciated that to realize all or part of step that above-described embodiment method is carried is can
Completed with the hardware that correlation is instructed by program, described program can be stored in a kind of computer-readable recording medium,
The program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed
Or implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two
It is individual, three etc., unless otherwise expressly limited specifically.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure, material or
Feature is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, ability
The technical staff in domain can enter the feature of the different embodiments or example described in this specification and different embodiments or example
Row is combined and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment be it is exemplary,
It is not considered as limiting the invention, one of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, changes, replacing and modification.